If convicted, a woman, who threw hot coffee on a bus driver, faces up to five years in prison and $15,000 in fines, while a man who shoved a train conductor faces up to 18 months in prison and $10,000 in fines.

The effort by the transit agency comes on the heels of September’s accident, which killed one person standing on a platform and injured more than 100 others. It was later revealed the engineer in that crash suffered from sleep apnea, a fatigue-inducing disorder.